Replacement Battery for Xiaomi Vacuum Robotics Roborock S5 S6 S7 S50 S51 S52 S55 T4 T6 T7 T60 T61 T65 E4 E20 E25 E35 C10 CT10, S5 Max 14.8V Li-ion Robot Cleaners

A story of my poor Roomba coming back to life.I am so glad I got this vs buy a whole new roomba, I would of spent a fortune.My kids placed the roomba outside for a little bit so we can deep clean it, but kind of forgot about it with life events, school, etc it was the biggest regret we made lol. between the rain & humidity. It Just stopped working even on the charger the power light would blink and turn off.I called the Roborock company, emailed back an forth, because my warranty ended they said to just buy another since they can't determine if it can be fixed or replace a part.I took it completely apart with the help of a YouTube video, I cleaned it up, and got the battery out and realized it needed to be replaced, I got new brushes, a few new parts that had needed to be replaced from wear and tear ( we've have owned it for 3 years)I ordered this after some much time researching.It came quickly and It fit. I put it on the charger for a day, and heard the " power on" Melody in the middle of the Night, I was THRILLED! I ran downstairs to see of what I heard was correct and I was about to cry lol.We love our roomba, gave it a name and has a " Eva" sticker on it, its literally part of our family, the whole family is happy that the roomba is alive and doing well. ❤️

Purchased as a higher-capacity replacement for our OEM Roborock S7 MaxV battery (5200mAh).After this battery performed poorly (despite claiming 28.8% more capacity than the OEM battery), I disassembled it. Inside, I found eight "INR 18650-26E" cells in a 2P4S configuration. Each of these cells is 4.2v nominal and 2600mAh. For a 6700mAh battery in this configuration, each cell *should* be 3350mAh. As it stands, the configuration yields 14.6v (nominal) and 5200mAh, not the advertised 6700mAh.Still, at 5200mAh it should be just as capable as the OEM battery - right? Think again...This battery arrived totally dead. After charging, it was able to power up our Roborock. But it continues to die much earlier than the vacuum expects and cannot make it back to dock when it realizes it needs to charge. That leads me to believe that these (lower-than-advertised capacity) cells are also either damaged (possibly from being shipped/sold fully discharged) or have already been used to a decently high cycle count.

Our battery finally gave out on our Roborock S6 Pure. Replaced it with this and also got a chance to clean a ton of dog and cat hair from under the plastic housing that I didn't realize was there. Once I swapped the battery and cleaned it all up, I charged it for a full night. Ran it today and it ran a full cycle without stopping to recharge or giving out because the battery was on its last leg.We'll see if the battery lasts, but thus far it's great and I have no complaints.If you're taking it apart, note that you only need to remove the larger black screws on the bottom of the S6 Pure. You do not need to undo the shiny screws that are recessed deep in the back.

Works great no problems

Although the new battery is labeled as rated more mAh than the previous battery, it was not lasting in terms of time or cleaning area any longer than my several year old battery that I replaced. The company however was very prompt in responding to my concern. Good to work with.

Bad quality don’t buy, doesn’t last more than 20 mins with new battery.

I bought this as an upgraded replacement for the battery in my Roborock S6MaxV. The first one I got was a dud and was causing all kinds of weird shutdowns and problems. The company refunded me immediately and the second copy I got from them is working just fine.

Good battery, feels like it holds longer charge than original